Daniel



(No mael.)

D. (LKNOWL-TON.

Shoe Nail 0r Sole Fastening.

No. 236.167. Patented Jan. 4,1881;

UNITED STATES PATENT OFFICE.

DANIEL C. KNOWLTON, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE- FLEXIBLE SHOE FASTENING MACHINE COMPANY, OF SAME PLACE.

SHOE-NAIL OR'SOLE-FASTENING.

SPECIFICATION formingpart of Letters Patent No. 236,167, dated January 4, 1881.

Application filed October 13, 1880.

To all whom it may concern:

Be it known that I, DANIEL G. KNowLToN, of Boston, in the county of Sufl'olk and Commonwealth of Massachusetts, have invented a new and useful Improvement in Shoe-Nails or Sole-Fastenings, of which the following, taken in connection with the drawings, is a specification.

The object of my invention is to produce a shoe-nail or sole-fastening having a clinchpoint and a shoulder equivalent for a head without enlarging the diameter of the nail at the surface of the sole.

Figure l of the drawings annexed is a side [5 view, showing at the top (marked a) the full sze of the wire from which the nail is made for about one-tenth the length of the nail. Below that a segment of the wire is cut away, making a shoulder from one-third to one-half the diameter of the wire, and from this shoulder to the point of the nail the segment cut shows a section of a sole with nail in it as driven and clinched on the inner side.

This nail, when driven into its place in the sole of a shoe by the machine used for that 3 5 purpose, shows on the outer surface of the sole only the diameter of the wire from which it is cut, and as there is no enlargement of the (No model.)

wire to form a head, the surface of the leather is not carried down so as to make a depression around the nail as it is by nails havingahead larger than the shank. One side of the shank of the nail being flat, it cannot turn around in the leather, as a round nail often does after the shoe has been worn some time.

In using these nails, as they are made from wire passing the cutting and driving machine, the fiat side of the shank will be toward the outer edge of the sole, and when the nail meets the face of the last it will always clinch at right angles to the flat surface. The shoulder forms a good equivalent for a head, and, together with the clinch of the nail, secures the outer sole, the vamp, and the inner sole of the shoe in their respective relative positions firmly and substantially, to secure the greatest durability to the shoe.

The wire used to make this improved nail may be round or octagonal, or of any other form in which wire is or can be made; and it may be plain-surfaced or corrugated in any of the forms of corrugatin g the surface of wire.

I claim as new- An improved shoe-nail 0r sole-fastening made from metallic wire of any suitable form, having a straight surface on one side from end to end, with the opposite side cut away from a shoulder near the top or head of the nail and tapering to the point, substantially as described.

DANIEL C. KNOWLTON.

Witnesses:

F. L. HOUGHTON, G110. M. BINGHAM. 

